@barolobrain
I own a Cadenza Bronze and have heard the Red. Also owned the Kontra "a", Kontra "c", and Jubilee, which were predecessors of the Red, Bronze, and Black respectively. With Benz I had the Glider L2, Wood M2, and a Reference 3 Copper.
I like both the Red and Bronze a lot at their respective price points. I stayed away from the Black because I didn't love the Jubilee, and have read reports that make it sound like it's an improved Jubilee (i.e. lacking some warmth of the Bronze). Of course I think the Bronze is better, but the Red is really solid at that price, and it can rock! Haven't heard the Blue or its predecessor, but it looks cool too.